| 摘要 |
5-Amino-1-phenylpyrazole-4-carboxylic acid esters of the formula <IMAGE> where R1 is methyl, trifluoromethyl, chlorine or bromine, R2 is chlorine, bromine, iodine or akylsulfonyl, R3 is hydrogen, chlorine or bromine, or is methoxy in the 5-position, in which case R1 and R2 are chlorine, whilst R2 is hydrogen if R3 is chlorine in the 3-position, and R4 is methyl, and herbicides containing these compounds. |
